21059991

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{2333}}^1$

素因数の和:2415

約数の個数: 24

約数和(自身を含む): 32769360

約数和(自身を除く): 11709369

約数列:

[1, 3, 9, 17, 51, 59, 153, 177, 531, 1003, 2333, 3009, 6999, 9027, 20997, 39661, 118983, 137647, 356949, 412941, 1238823, 2339999, 7019997, 21059991]

約数ペア:

[(1, 21059991), (3, 7019997), (9, 2339999), (17, 1238823), (51, 412941), (59, 356949), (153, 137647), (177, 118983), (531, 39661), (1003, 20997), (2333, 9027), (3009, 6999)]